Let's talk about GHKU CU GHK Cu: The Regenerative Glow Peptide GHK Cu (Copper Peptide) is a naturally occurring peptide in your body that plays a powerful role in cellular repair, skin Blue Booster Copper Peptide GHK Cu DermaFusion Aesthetics Ltd Not all Copper Peptides are created equal If you've tried copper peptides before and saw no change, here is why: Concentration and Stability. Most serums use a diluted solution that barely scratches Cosmetic Grade Copper Peptide Ghk Cu Powder Copper Peptide for Skin Care